Today’s threat landscape is marked by a surge in identity-based attacks, supply chain risks, and critical vulnerabilities affecting widely used platforms. CISOs must remain vigilant, focusing on both immediate technical mitigations and strategic communication with executive leadership. Below, we break down the top items demanding CISO attention, followed by notable developments and a practical action checklist for the day. Top Items CISOs Should Care About (Priority) Coding Gaffe Exposes Microsoft 365 Accounts to Widespread Takeover What happened: A coding error in Microsoft 365 has exposed accounts to widespread takeover risk. Attackers can exploit this flaw to gain unauthorized access to enterprise accounts, potentially leading to data breaches, business disruption, and compliance violations. The vulnerability is significant due to Microsoft 365’s ubiquity in enterprise environments. Security researchers have demonstrated proof-of-concept attacks, and there are indications of...